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公开(公告)号：US10399828B2
公开(公告)日：2019-09-03
申请号：US15772339
申请日：2016-10-07
发明人： Takashi Hiekata , Koji Inoue , Hiroaki Kawai , Shintaroh Sasai , Tetsuya Ogawa , Toshiro Yamashita
摘要： An electrically driven winch device includes a winch drum, a plurality of axial-gap electric motors, and a drive shaft. The winch drum rotates around a drum axis in order to wind or unwind a work rope. The plurality of electric motors are electric motors configured to drive the winch drum to rotate, and are each provided with a stator, and rotors which rotate around a rotation axis and are disposed at an axial distance from the stator. The drive shaft is disposed coaxially with the drum axis and serially connects the rotors of the plurality of electric motors on the rotation axis.
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公开(公告)号：US10189687B2
公开(公告)日：2019-01-29
申请号：US15532821
申请日：2015-11-27
发明人： Takashi Hiekata , Hiroaki Kawai , Koji Inoue , Shintaro Sasai , Tetsuya Ogawa , Toshiro Yamashita
摘要： An electric winch device causes an operative part to perform an operation for hoisting work by winding up or letting out a rope connected to the operative part, the electric winch device including: a winch drum having an axis, provided on the mobile crane to be rotatable about the axis and wound with the rope therearound; a plurality of motors located on one side of the winch drum in an axial direction in which the axis of the winch drum extends, and arranged side by side in a direction perpendicular to the axial direction; a gear mechanism which combines torques output from the plurality of motors; and a transmitting part which transmits a resultant of torques combined by the gear mechanism to the winch drum to rotate the winch drum to thereby cause the winch drum to wind up or let out the rope.
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公开(公告)号：US11320852B2
公开(公告)日：2022-05-03
申请号：US16648095
申请日：2018-08-24
发明人： Koji Inoue , Hiroshi Hashimoto
IPC分类号： G05G5/03
摘要： A force sense imparting operation device that imparts a force sense in accordance with a load acting on an actuation device. The device includes an operation member, a displacement detector, a load detector, a force sense generator that imparts a force sense to an operator who operates the operation member, a current controller that performs an actual control and a preliminary control, the actual control increasing the force sense imparted by the force sense generator by increasing an excitation current in response to an increase in the load, the preliminary control supplying the excitation current to an excitation coil prior to the actual control, the excitation current supplied by the preliminary control being set to a preliminary current value lower than the excitation current supplied to the excitation coil under the actual control, and a current supplying portion that supplies the excitation current to the excitation coil.
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公开(公告)号：US11001481B2
公开(公告)日：2021-05-11
申请号：US16308207
申请日：2017-06-05
发明人： Hiroaki Kawai , Takashi Hiekata , Koji Inoue , Takashi Tokuyama , Hiroshi Hashimoto , Toshiaki Shimoda , Shintaroh Sasai , Tetsuya Ogawa , Toshiro Yamashita
摘要： An output-torque estimation unit obtains a value of a current input to a motor, from a power converter, and calculates an estimated output torque value which is an estimated value of output torque of the motor, from the obtained value of the current. A load estimation unit estimates a load value of a hanging cargo based on the estimated output torque value which is calculated by the output-torque estimation unit, a speed reduction ratio of a speed reducer, an effective radius of a winch drum, and the winding number which is set by the number setting unit.
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公开(公告)号：US10773932B2
公开(公告)日：2020-09-15
申请号：US16332505
申请日：2017-09-04
发明人： Tetsuya Ogawa , Shintaroh Sasai , Koji Inoue , Takashi Hiekata
摘要： Provided is an electric winch apparatus capable of preventing irregular winding of a wire rope caused by landing of a hoisted-down suspended load. The electric winch apparatus includes a winch drum (5) around which a wire rope (2) is wound, an electric motor (8) which rotates the winch drum (5), an operation lever (13a), a measurement unit (18) which measures a tension index value corresponding to a tension in the wire rope (2), and a controller (12) which controls motion of the electric motor (8). The controller (12) stops motion of the electric motor (8) when an operation in a lowering operation direction is applied the operation lever (13a) and a tension average value as an average value of a tension in the wire rope (2) becomes less than or equal to a predetermined tension reference value, the average value of the tension corresponding to an average value of the tension index value in a predetermined period.
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公开(公告)号：US10287137B2
公开(公告)日：2019-05-14
申请号：US15889700
申请日：2018-02-06
发明人： Hiroaki Kawai , Takashi Tokuyama , Toshiaki Shimoda , Koji Inoue , Tetsuya Ogawa , Shintaroh Sasai
摘要： Disclosed is a winch control apparatus for a crane, which comprises: a first compensation torque value calculation section which calculates, when a hoisting manipulation being input, based on a difference speed between a detected rotational speed and a target speed according to a manipulation amount of the hoisting manipulation, a first compensation torque value for enabling an electric motor to generate a reverse-rotation-preventing torque which is a torque in a hoisting direction and corresponding to the difference speed; and a second compensation torque value calculation section which calculates, when the hoisting manipulation being input, based on a detected load value, a second compensation torque value for enabling the electric motor to generate a load bearing torque which is a torque in the hoisting direction and necessary for bearing a load of the load value.
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公开(公告)号：US10386883B2
公开(公告)日：2019-08-20
申请号：US14916030
申请日：2014-08-25
发明人： Koji Inoue , Takashi Hiekata , Tatsurou Asano
摘要： A force-sense-imparting operation device including a stationary section, a rotating section, and an operation member. One of the stationary section and the rotating section includes an excitation coil and a first magnetic pole section, and the other includes a second magnetic pole section capable of opposition to the first magnetic pole section in a specific opposing direction. The first magnetic pole section forms a magnetic circuit with the first magnetic pole section due to the second magnetic pole section being excited in a state that the second magnetic pole section opposes the first magnetic pole section. The magnetic circuit encircles a periphery of the excitation coil on the cross section, the second magnetic pole section being arranged to separate from the first magnetic pole section with rotation of the rotating section.
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公开(公告)号：US10355570B2
公开(公告)日：2019-07-16
申请号：US15514954
申请日：2015-08-20
申请人： Kobe Steel, Ltd.
发明人： Kenichi Inoue , Hiroaki Kawai , Koji Inoue , Takashi Hiekata , Kazuhide Sekiyama
摘要： In the outer rotor-type axial gap brushless motor of the present invention, each of a plurality of coils provided to a stator is constituted by winding a band-shaped conductor member via an insulating member such that the width direction of the conductor member runs along the axial direction of the coil, and each coil has a through passage which penetrates in the axial direction of the coil and which is included between prescribed turns in a portion of the coil that corresponds to the outer side in the radial direction of the stator relative to a core portion of the coil.
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公开(公告)号：US10381890B2
公开(公告)日：2019-08-13
申请号：US15742075
申请日：2016-07-20
申请人： Kobe Steel, Ltd.
发明人： Koji Inoue , Takashi Hiekata , Hiroaki Kawai , Shintaro Sasai , Tetsuya Ogawa , Toshiro Yamashita , Shingo Kasai , Shumpei Hayashi
摘要： An axial gap type dynamo-electric machine (1) comprises: a stator (2) provided with a magnetic core (21) and an exciting coil (22); a rotor (3) provided with a plurality of permanent magnets (4) circumferentially arranged around a rotation center axis (AX), the rotor (3) being also provided with a disk-shaped base material (31) for supporting the permanent magnets, the rotor (3) being disposed at an axial distance from the stator (2); and affixation members (5) for affixing the permanent magnets (4) to the base material (31). The permanent magnets (4) are provided with front surfaces facing the stator (2), rear surfaces facing the base material, and engagement-receiving sections (412, 422, 432) formed at peripheral edges of the permanent magnets (4). The affixation members (5) include: engagement sections (512) engaging the engagement-receiving sections; and affixation sections (511) forming mechanical affixation structures relative to the base material.
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公开(公告)号：US09796564B2
公开(公告)日：2017-10-24
申请号：US15055721
申请日：2016-02-29
发明人： Hiroaki Kawai , Takashi Hiekata , Koji Inoue , Shintaro Sasai , Toshiro Yamashita , Koichi Shimomura , Tetsuya Ogawa
CPC分类号： B66C13/50 , B66C13/22 , B66C15/00 , B66C23/905
摘要： A crane includes an overload safety device and a identifying unit. The overload safety device includes a maximum-load calculating unit configured to calculate a maximum load that a winch drum is capable of winding up with driving torques output from the remaining electric motors other than a failed electric motor identified by the identifying unit, an updating unit configured to update a set hoisting ability value stored in a storing unit to a value equal to the maximum load, and a control unit configured to cause the remaining electric motors to operate when a value of a load derived by a load deriving unit is equal to or smaller than a latest set hoisting ability value stored in the storing unit and stop the operation of the plurality of electric motors when the value of the load derived by the load deriving unit exceeds the latest set hoisting ability value.
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